I am using wordpress and Google is indexing my contact, tag and category pages. Obvious I don't want this to happen anymore. Please tell me how can I manage to stop G indexing these pages.
create a robot.txt file by visiting google webmaster tools and clicking domain then look for robot.txt creation, you then add the pages you DONT want indexing and upload it to your root directory and when google bots visit they will read file and NOT crawl the page mentioned.
And another problem that I have is that G indexes mywww.domain.com and I want them to index only http://domain.com because I think there might be a problem with this. I don't want them to think that there is some duplicate content or something. Please help!
you can do this in your blog dashboard, I think it is called canonisation? Look in your blog dashboard and if it is wordpress do to wordpress.org and search there tonnes of people with similar issues.